protected override void SetupStateMachine()
{
stateMachine = new StateMachine();
// Set Up States
var walkRandomWithinCircle = new MoveToRandomWithinCircle(this, agent, SpawnPatrolRadius);
var walkToTarget = new MoveToTarget(this, agent, MoveState.Walking);
var standAndWait = new StandAndWait();
var runAwayFromPlayer = new RunAwayFromTransform(this, agent, playerProximity, MoveState.Running);
var startRunningAway = new StartRunningAway(this, agent, playerProximity, EscapedPlayerRadius);
//////----
// Set Transitions
//
// walkToTarget
stateMachine.AddTransition(walkToTarget, standAndWait, ReachedGoalPosition());
stateMachine.AddTransition(walkToTarget, standAndWait, GotStuck());
// standAndWait
stateMachine.AddTransition(standAndWait, walkRandomWithinCircle, WaitFor(standAndWait, IdleTime));
// startRunningAway
stateMachine.AddTransition(startRunningAway, runAwayFromPlayer, () => true);
// runAwayFromPlayer
stateMachine.AddTransition(runAwayFromPlayer, startRunningAway, GotStuck());
stateMachine.AddTransition(runAwayFromPlayer, startRunningAway, WaitFor(runAwayFromPlayer, 1.0f));
stateMachine.AddTransition(runAwayFromPlayer, walkRandomWithinCircle, EscapedFromPlayer());
// One-frame States
stateMachine.AddTransition(walkRandomWithinCircle, walkToTarget, () => true);
//////----
// Set Universal Transitions
//
// One-frame States
stateMachine.AddUniversalTransition(startRunningAway, WantToRunFromPlayer());
// Conditions
Func <bool> ReachedGoalPosition() =>
() => Vector3.Distance(transform.position, goalPosition) <= agent.stoppingDistance + 0.2f;
Func <bool> GotStuck() =>
() => timeSinceLastProgress > StuckTime;
Func <bool> WaitFor(IWaitableState state, float seconds) =>
() => state.GetTimeElapsed() > seconds;
Func <bool> WantToRunFromPlayer() =>
() => (stateMachine._curState != runAwayFromPlayer) && playerProximity.IsInRange;
Func <bool> EscapedFromPlayer() =>
() => !playerProximity.IsInRange;
// Set initial state
stateMachine.SetState(walkRandomWithinCircle);
}
protected override void SetupStateMachine()
{
stateMachine = new StateMachine();
// Set Up States
var randomPointFarAway = new RandomOnNavMesh(this, transform, minDistanceToNextLocation);
var walkRandomWithinCircle = new MoveToRandomWithinCircle(this, agent, locationPatrolRadius);
var walkToTarget = new MoveToTarget(this, agent, MoveState.Walking);
var standAndWait = new StandAndWait();
//////----
// Set Transitions
//
// randomPointFarAway
stateMachine.AddTransition(randomPointFarAway, walkToTarget, RandomPointIsGood());
// walkToTarget
stateMachine.AddTransition(walkToTarget, standAndWait, ReachedGoalPosition());
stateMachine.AddTransition(walkToTarget, randomPointFarAway, GotStuck());
// standAndWait
stateMachine.AddTransition(standAndWait, walkRandomWithinCircle, WaitFor(standAndWait, waitTimeBetweenSmallMoves));
// walkRandomWithinCircle
stateMachine.AddTransition(walkRandomWithinCircle, walkToTarget, () => true);
//////----
// Universal Transitions
//
stateMachine.AddUniversalTransition(randomPointFarAway, PatrolTimerExpired());
// Conditions
Func <bool> ReachedGoalPosition() =>
() =>
{
if (!(Vector3.Distance(transform.position, goalPosition) <= agent.stoppingDistance + 0.2f))
{
return(false);
}
isInTransit = false;
return(true);
};
Func <bool> RandomPointIsGood() =>
() =>
{
var vector = transform.position - initialPosition;
return(Vector3.Dot(vector, vector) > minDistanceToNextLocation * minDistanceToNextLocation);
};
Func <bool> PatrolTimerExpired() =>
() =>
{
if (timeAtThisLocation > timeSpentAtEachLocation)
{
timeAtThisLocation = 0.0f;
isInTransit = true;
return(true);
}
return(false);
};
Func <bool> GotStuck() =>
() => timeSinceLastProgress > StuckTime;
Func <bool> WaitFor(IWaitableState state, float seconds) =>
() => state.GetTimeElapsed() > seconds;
// Set initial state
stateMachine.SetState(randomPointFarAway);
}
